
Proceedings Paper
Adiabatic femtosecond pulse compression and control by using quadratic cascading nonlinearityFormat | Member Price | Non-Member Price |
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Paper Abstract
We experimentally demonstrate that adiabatic compression of femtosecond pulse can be achieved by employing the
management of quadratic cascading nonlinearity in quasi-phase-matching gratings. Cascading nonlinearity is not a
simple analogy with third-order optical nonlinearity in term of the engineering properties of the magnitude and focusing
(or defocusing) nonlinearity. Femtosecond pulse compression is investigated based on type-I (e: o + o) collinear QPM
geometry of aperiodically poled MgO-doped LiNbO3 (MgO: LN). Group-velocity-matching condition is chosen to
generate quadratic femtosecond soliton consisting of fundamental (FF) and second harmonic (SH) pulses. Adiabatic-like
compression process is observed in the length of 50 mm linearly chirped QPM. Cascading nonlinearity is local managed,
instead of dispersion management used in fiber adiabatic soliton compression. Quadratic soliton including FF and SH
pulses are obtained from the compression of 95 fs FF pulse in the initial experiments. Dependence on the phase
mismatch and group velocity mismatch, cascading nonlinearity has a flexible property and presents a new challenge for
exploring femtosecond pulse shaping and control. The demonstrated pulse compression and control based on cascading
nonlinearity is useful for generation of shorter pulses with clean temporal profiles, efficient femtosecond second
harmonic generation and group-velocity control.
Paper Details
Date Published: 7 February 2008
PDF: 9 pages
Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 68390B (7 February 2008); doi: 10.1117/12.757074
Published in SPIE Proceedings Vol. 6839:
Nonlinear Optics: Technologies and Applications
Yiping Cui; Qihuang Gong; Yuen-Ron Shen, Editor(s)
PDF: 9 pages
Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 68390B (7 February 2008); doi: 10.1117/12.757074
Show Author Affiliations
Published in SPIE Proceedings Vol. 6839:
Nonlinear Optics: Technologies and Applications
Yiping Cui; Qihuang Gong; Yuen-Ron Shen, Editor(s)
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